Incubator.



P. J. MOCABE.

INOUBATOB.

MPLIOATION FILED JULYa. 190B.

Pasantad June 29, 2.909.-

3 SHEETS-SHEET 1.

I FHBBTS-SHEET 2.

Patented June 29,- 1909.

P. J. MOCABE.

INCUBATOR.

APPLICATION FILED JULY 3. 1908.

31mm nio:

P. J. MOGABE.

INGUBATOB.

APPLIUATION FILED JULY s. 190e.

@@@ggs atented June 29, 1909.

3 SHEETS-SEBBT 8.-

i 5 (gnu mko@ 5 sra/15%( l m 26 mm.

PATRICK J. MCCABE, OF WASHINGTON, MINNFSOTA.

, INcUBAToR.

Specification of Letters Patent.

Patented June 29, 1909.

Application filed July 3,- 1908. Serial No. 441,817.

To all whom it may concern:

Be it known that I, PATRICK J. McCann, a citizen of the United States, residing at Tashingtom in the county of Lesueur and State of Minnesota, have invented new and useful improvements in Incubatore, of which the following is a specification.

This invention pertains to incubators and has for its purpose to provide a device of that 1Q. character wherein the temperature may be claims, the

automatically regulated so as. to be non-variable; and one wherein substantially all the working parts 'are contained within the incubator.

It further provides an incubator of suoli structural arrangementthat the hatching chambers or egg sections are removed and se arated from the temperature chamber w erebythe temperature of the hatching chambers may be controlled without molestation.

-The incubator comprises three se arate sections or receptacles offdiilerent imensions contained .or nested one Within -the other, and providing between-'them a plurality of air spaces' which serve to maintain an even temperature within the incubator irrespective of the outside tem erature.

` With these and subor inate objects in view, which shall be pointed out in the following speciiication, and set forth in the Hreferred embodiment of my invention is i ustrated in the accompanying drawlngs, wherein:

Figure 1 is a perspective view of the incubator. Fig. 2 is a top )lan view of the same with the cover remove Fig. 3 is a horizontal viewin section taken on the line 3 3 of Fig. 2. Fig. 4 is a transverse section taken on the line d---l of Fig. 2. Fig. 5 is a detail viewV of the vent regulator for the hatching chambers. Fig. Sis a =erspective viewof the heating tank and regu ator theiefon Fig. 7 is a perspectiveview of the inner top wall, and Fig. 8 is a detail sectional view of one of the corners of the frame structure taken on the line 8- -8 of Fig. 4.-

f Referringfmorc in detail to the drawings wherein l-ikenumerals' and letters of referd ilierent figures shown, the incubator comence designate corresponding parts in the prises an outer casing having front and back walls 1 and 2 res actively, sides 3 and 4t, top 5,. and: base, or ttomf 6, the whole being supported upon legs 7. Within this outer .casing is-nested one of less-dimensions coinceptacle.

cated at the rear of the incubator.

prising sido members S and 9, end members 10 and 11, a bottom 12 and top 13, which top is removable and has air passages in the side edges thereof. Within this inclosuro is incased a third receptacle or tray comprising sides 14 and 15, ends 17 and 18, and bottom20. These three receptacles are held rigidly in place and spaced. from each other by the corner pieces a and l) and side blocks c, which spacesprovide the air chambers for the purpose above stated. The bottom l12 of the second receptacle is provided with openings 12 .extending the entire length of the receptacle, and centrally disposed over said openings and extendingtheirentire length is a partition 13,

extending from the plane of the top of thev bottom 12 to the bottom 20 of the third re- The innermost receptacle constitutes the hatching chamber for the eggs, for which purpose it is divided into compartments A, B, C, and D by removable partition pieces 19, 20', and 21 ;and within each of'tho chambers A, B, C, and D is a removable egg tray E. It will thusV be seen that by this disposition of the hatching chamber a number of independent hatching 'sections 'are provided, whereby it is possible to hatch eggs in dierent lots and at different periods, or to hatch diil'crcnt kinds of eggs, thus: hen eggs could be treated in chambers A and B, while duck eggs were being hatched in C and D.

To gain access to the hatching chambersA, B, C and D thc front side 1 of the outer casing is fitted with a hi'nged door d which carries with it corresponding sec-tions e and f of the sides 8 and 15 respectively. The three panels constituting the `door are each fitted with glass whereby the operations Within the hatching chambers may be observed without opening the door.

The chambers A, B, C and l) are aired by means of the ventilator K which isformed integral with the underside of the tank F and running substantially thc length thereof. At suitable distances throughout its length the ventilator is provided with pcrforations 7c leading to the several hatching chambers. The amount of air admitted through the ventilator K is regulated by the damper L lo- To facilitate the removal of the tank in order to gain access to the incubator chambers from above, the ventilator tube li is divided at the rear inner wall 18, as shown in Fig. 3, at which point is a ledge 49 on the wall 18 to support the rear end of the tank. The egg chambers are provided with fresh air which passes in through the eg s, as the bottom of the egg trays is purpose y made solid to prevent thls. In this manner there is always a sup ly of fresh air in the egg chamber, but abso utely no draft through the eggs. Thus the eggs are left to hatch with their own natural moisture. This moisture is maintained constant because there is no dry or heated air from the lamp to enter the egg chamber.

The heating apparatus for the incubator comprises substantially a rectangular tank F, having a reduced extension or projection, G, protruding through the frames adjacent to end 3 of the incubator. The tank is provided with a substantially horizontal recess or chamber 22 extending approximately, the length of the tank and terminating in a downwardly and flared opening 23 through the extension G. The recess 22 is disposed substantially in the center of the tank F to provide spaces 24 and 25 respectively above and below the recess, and at the terminating end 23 thereoi' a chamber 26 equal in depth tothe depth of the heating'tank is provided and affords an opportunity for the water in the heating tank to circulate freely around the opening 23. The spaces 24, 25 and 26 contain the water to be heated, and for the purpose of filling the same a supply pipe 27 is provided, which extends through the top members 5 and 13 oi the intermediate and outer rece tacles. The heat being applied at 23 it will e see that substantially all of the heating of the water takes place at the ends 26. This causes the Water in the chambers '24, 25 and 26 to circulate slowly, both above and below the heat chamber 22 and around the opening 23 as shown in the drawings. This circulation of the Wateris important, for it is by means of such circulation that an even tem erature is secured throughout the Whole in erior of the incubator. vlactual practice has proved that in my incubator the heat at the end farthest from the lamp is approximately the same as in the end next to the lamp. This will be true no matter how long the incubator may be. To diffuse the heat withinA the chamber 22 the us .iai lamp l is used, which lamp rests upon a supporting shelf 28 secured to the under side of the outer frame at the end 3. The globe ol' the lamp I fits Within the ppening 23 oi the tank, which opening by reason of its peculiar design directs the heat to the Walls of the chamber 22, thus heating the water within the tank to any desired temperature.

across the opening 23, is a ridge or Wall 23",'

which renders the bottom of the heat oham-A A ber 22 capable of holding a thin layer of free Water 24. To supply water to this recep tacle is provided the inlet pipe 25', extending upward through the several compartments to the outside of the incubator. on the bottom of the heat chamber 22 takesv u any poisonous gases that may come from t e lamp, and the air in the room in which the incubator is operated is therefore always in a fresh moistened condition. This fresh This tree Water moistened air enters the incubator through To regulate the temperature of the water;l

in the tank, an automatic means is devised, which consists of valves 29 and 30, hung from a supporting .Wire 3l by links 32 and 33 respectively, which wire is in turn ulcrumed upon a support 34 to properly hold the valves 29 and 30 in their proper positions. A guide 35 is provided for keeping the wire 31 in proper alinement and thereby hold the valves 29 and 30 against any swinging or other movement which would tend to dis lace them from operative position. The unction of valve 29 is to close the opening of the heat outlet pipe 36, and valve 30 `is for a similar purpose on the pipe 37, but to be used only in case of emergency for properly regulating the relative positions of these valves. 0n the wire 3l is slidably adjusted a controlling Weight 38 whereby the temperature Within the incubator may be regulated as hereinafter described. When the desired degree of temperature has been decided, the weight is accordingly set in position, in which position the bar 31 is substantially horizontal as shown in Fig. 3, thus raising the valve 29 but seating the valve 30 against the outlet o ening of the pipe 37. Heat having now een diffused within the chamber 22 and bringing the temperature of the water'in the tank to the desired point, the incubator is in prime condition for operation. While in this state, the heat after having circulated within the chamber 22, passes out through the pipe 36, to facilitate which the valve 29 is provided with an aperture 39, located at-a point substantially central of the outlet pipe. The liberated heat thence circulates within the upper portion of the incubator, passes doWn- Wardly and throughout the s ace 46, within space 45, thence downward y through the opening l2 in the bottom 12, thence upwardly between the intermediate and outer Upon the bottom or" the heat chamber, 1 walls, i. e. within the spaces 42 thence p wire 31, and thereby lower throughout the space 41, and is discharged through Vent 48 at the top. To carry off Afoul air from the egg chambers, a number of ducts 47 are provided, which ducts are shown as communicatin with the chambers A and D and space 43. Il for any reason the temperature within the chamber 22 should exceed the determined degree, the excess of heat passing out through the opening 36, would cause su'Hieient draft against the valve 29 to raise the same a distance sufhcient to cause the tilting of its supporting or unseat the valve 30 from the outlet pipe 37, which would then permit outside air to enter therethrough and within the chamber 22 until the proper temperature has been reached, whereupon the Valves 29 and 3Q would again assume their normal or set position. When the valve 3() has been unseated from the position shown in Fig. 3 it rests upon the spider 52.

lVhat is claimed as new is,-

1. In an incubator, the combination with a plurality of nested receptacles, of a heating tank within said receptacles, a heating passage-way within said tank and communicating with the interior of said incubator, and separate means for Ventilating the incubator.

2. In an incubator, the combination with aplurality of nested receptacles, of a'heating tank'within said receptacles, aheating passage-wayl within said tank and communicating with the interior of the incubator, said circulating receptacles being spaced whereby to provide,

passages for the heating medium from said tank passage-way, and separate means for admitting air to said incubator.

3. In an incubator, the combination with inner, intermediate and outer nested recepftacIeS, said receptacles being spaced to provide communicating passage-ways between the side, top and bottom Walls thereof, a

heating tank within the incubator andprovided with a heating passage-Way therethrou'h, said passage-way communicating with tthe interiorof the incubator wherebv to deliver heating medium therein to circulate through said passa e-ways, and means for Ventilating the incu ator.

4. In an incubator, the combination with a plurality .of nested receptacles, said receptacles being spaced to provide air passages therebetween, a heating tank within the incubator, and superposed on the innermost receptacles whereby to,provide a hatehin chamber, a heating passage-way throug said tank `and communicating wlth the interior ofthe incubator, means within the incubator for automatically regulating the heating medium in said passage-way, and means for admitting outside air to said hatching chamber.

5. In an incubator, the combination with an inner, intermediate and outernested receptacle, of means for spacing said receptacles whereby to provide communicating pas. sages, a heating tank within said incubator, said tank 'superposed on the inner receptacle and roviding therewith -a closed hatching cham er, a ieating passage-way through said tank and communicating with the interior of the incubator whereby to deliver heated air to said passage-ways, automatic means for regulating the heat within said tank, and Ventilating means'for delivering outside air to the hatching chamber.

In testimony whereof Ihave hereunto set my hand in presence of two subscribing witnesses.

- PATRICK J. MCCABE. Witnesses:

W. J. SICHLER, JOHN MAY. 

